Now, a reader-submitted photo shows a 918, wearing black and white livery and a large “21,” prowling the streets of San Francisco. Autoweek's Mark Vaughn had a hands-on experience with a pair of cars, numbered 12 and 18, undergoing some desert testing, so this likely represents a third car on the roads of the Southwest.

Appearances are a bit deceiving here—what may appear at first glance to be carbon fiber weave on the rear of the car is actually a reflection from the photographer's dashboard. That doesn't mean there aren't plenty of composites on the roughly 3,748 pound car. Don't miss our report on all the (speculative) details.

Thanks to Autoweek reader Carson Chen, whose son Jason snapped the photo, for the submission.

Graham Kozak
- Graham Kozak drove a 1951 Packard 200 sedan in high school because he wanted something that would be easy to find in a parking lot. He thinks all the things they're doing with fuel injection and seatbelts these days are pretty nifty too.
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